In Inputs.conf, it says that we can run powershell scripts using the below stanza. Does the universal forwarder have the capability to run this input alone?
[powershell://]
Is a UF required to have a Powershell to be installed on Windows host separately to run this input? OR Does Powershell come as a package with UF Installation?
Yes it can.
http://docs.splunk.com/Documentation/Splunk/7.2.1/Data/MonitorWindowsdatawithPowerShellscripts
Powershell is not packaged with UF, it must be installed to Windows.